Having problem in visible/hidden

Question

I am using same script under two subform section 1 and section 2. When click on button under section1, this script is working well, but section 2 not working.
Again if I click on the button section 2, it is working well, but section 1 not working then. Each section withstand other section. I have seen presence action get corrupted.
var sec = xfa.resolveNodes("images.thumb[*]");
outer:
for(var i=0; i<sec.length; i++)
    if(sec.item(i).thum.rawValue == null)
        if (event.target.importDataObject("name"))
            var attachmentObject = event.target.getDataObject("name");
            var filetype = attachmentObject.path.substring(attachmentObject.path.lastIndexOf(".") + 1);
            if (filetype === "jpg" || filetype === "JPEG" || filetype === "png" || filetype === "bmp" || filetype === "JPG")
                var imageStream = event.target.getDataObjectContents("name");
                var imageStreamEncoded = Net.streamEncode(imageStream, "base64");
                sec.item(i).presence = "visible";
                sec.item(i).thum.rawValue = util.stringFromStream(imageStreamEncoded);
                break;
            else {app.alert("Please insert correct format image");}
        else { break outer;} //if cancel
What should I do now?

Answer 1

Thanks for your reply.
I am getting browser option to attach image too. I have seen section 1 and 2 are not flowable, but auto hide. All parent subforms are flowable. When I make all flowable all working well. Now I have changed layout, all working well.
Do you think only child subform which is auto hide, withstands 2nd time to visible?  Actually I like your idea, stong script. You know this attachment script is yours. I like your blog too.
Thanks for sharing your profound knowledge with us.